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| 慢钻; 吊打纠余钻进; 轻压慢钻; 吊打 | |||
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time drilling : 43 phrases in 6 subjects |
| Automobiles | 1 |
| Drilling | 14 |
| Engineering geology | 1 |
| Geology | 3 |
| Oil / petroleum | 8 |
| Technology | 16 |
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